GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 2WD 🢒 Engine 🢒 Engine Mechanical - 8.1L 🢒 Oil Pump, Screen and Crankshaft Oil Deflector Installation

    Object Number: 635703 Size: SH
  1. Install the crankshaft oil deflector.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the crankshaft oil deflector nuts.

    3. Tighten
    Tighten the crankshaft oil deflector nuts to 50 N·m (37 lb ft).


    Object Number: 471060 Size: SH

    Important: During assembly, install a NEW oil pump driveshaft retainer. Slightly heat the retainer above room temperature for ease of installation onto the oil pump driveshaft.

  3. Apply clean engine oil into the oil pump through the outlet oil hole. Rotate the pump in both directions in order to prime and lubricate the pump.
  4. Assemble the oil pump, driveshaft, and a NEW retainer.
  5. Install the oil pump assembly. Position the oil pump onto the locating pins.
  6. Install the bolt attaching the oil pump to the rear crankshaft bearing cap.

    7. Tighten
    Tighten the oil pump bolt to 75 N·m (56 lb ft).

  7. Pour clean engine oil into the oil pump pick-up screen.